<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Security Helper : CodeIgniter User Guide</title>

<style type='text/css' media='all'>@import url('../userguide.css');</style>
<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />

<script type="text/javascript" src="../nav/nav.js"></script>
<script type="text/javascript" src="../nav/prototype.lite.js"></script>
<script type="text/javascript" src="../nav/moo.fx.js"></script>
<script type="text/javascript" src="../nav/user_guide_menu.js"></script>

<meta http-equiv='expires' content='-1' />
<meta http-equiv= 'pragma' content='no-cache' />
<meta name='robots' content='all' />
<meta name='author' content='ExpressionEngine Dev Team' />
<meta name='description' content='CodeIgniter User Guide' />

</head>
<body>

<!-- START NAVIGATION -->
<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
<div id="masthead">
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
<tr>
<td><h1>CodeIgniter User Guide Version 2.1.0</h1></td>
<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
</tr>
</table>
</div>
<!-- END NAVIGATION -->


<!-- START BREADCRUMB -->
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
<tr>
<td id="breadcrumb">
<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
Security Helper
</td>
<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter-kr.org/user_guide_2.1.0/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
</tr>
</table>
<!-- END BREADCRUMB -->

<br clear="all" />


<!-- START CONTENT -->
<div id="content">


<h1>	보안 Security Helper</h1>

<p>보안헬퍼는 보안관련 함수들을 포함하고있습니다.</p>


<h2>헬퍼로딩 Loading this Helper</h2>

<p>다음과같이 헬퍼를 로드합니다:</p>
<code>$this->load->helper('security');</code>

<p>다음 함수들이 사용가능 합니다:</p>


<h2>xss_clean()</h2>

<p>크로스 사이트 스크립트(Cross Site Script) 해킹을 필터링합니다.  </p>
<h2>sanitize_filename()</h2>

  <p>디렉토리 탐색시도를 방지합니다.이함수는 <a href="../libraries/security.html">암호화 클래스(Security
    class</a>)의 alias 중 하나입니다.더 많은 정보는 <a href="../libraries/security.html">암호화클래스</a>에서
    찾아보세요.</p>



  <h2>do_hash()</h2>

<p> SHA1 나 MD5 단방향 해쉬를 생성하여 암호(password)를 암호화(encrypting)할수 있게 해줍니다.  SHA1 생성이 기본값입니다. 예:</p>

<code>
$str = do_hash($str); // SHA1<br />
<br />
$str = do_hash($str, 'md5'); // MD5
</code>

  <p class="important"><strong>주의:</strong> 이전버전에서 <kbd>dohash() </kbd>함수였습니다요.</p>



<h2>strip_image_tags()</h2>

<p>문자열에서 이미지 태그를 벗겨줍니다.함수는 이미지의URL을 일반 텍스트로 리턴합니다.</p>

<code>$string = strip_image_tags($string);</code>


<h2>encode_php_tags()</h2>

<p>이함수는 PHP 태그를 엔티티(entities)로 변환시킵니다. 참고: XSS 필터링 함수를 사용하신다면 본 함수는 자동으로 적용됩니다.</p>

<code>$string = encode_php_tags($string);</code>







</div>
<!-- END CONTENT -->


<div id="footer">
<p>
Previous Topic:&nbsp;&nbsp;<a href="path_helper.html"> Path Helper</a>
&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
Next Topic:&nbsp;&nbsp;<a href="smiley_helper.html">Smiley Helper</a></p>
<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 - 2011 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
</div>

</body>
</html>